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20% Off Southwest Airlines Coupons & Promo Codes September 2026

✓agent-verified & updated·

Today's Current Southwest Airlines Coupons and Promo Codes:

15 offers in total
20%
OFF

20% Off Sitewide at Southwest

worked at checkout

Apply this discount code to save 20% on sitewide Southwest purchases.

  • community
How We Verify This Code
50
code confidence
good chance it works
2 of 2
code checks worked

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
DEAL

Earn 2,400 Rapid Rewards Points

Earn 2,400 Rapid Rewards points on Budget rentals of 4 or more days with this code.

  • store issued
How We Verify This Code
25
code confidence
worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Southwest Airlines published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
DEAL

Earn 2,400 Rapid Rewards Points on Avis Rentals

Earn 2,400 Rapid Rewards points on Avis rentals of 4 or more days with this code.

  • store issued
How We Verify This Code
25
code confidence
worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Southwest Airlines published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
30%
OFF

Up to 30% Off Budget Car Rentals

Save up to 30% on Budget leisure weekly and weekend base rates with this promo code.

  • store issued
How We Verify This Code
25
code confidence
worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Southwest Airlines published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
35%
OFF

Up to 35% Off Avis Car Rentals

Use this coupon code to get up to 35% off Avis leisure weekly and weekend base rates.

  • store issued
How We Verify This Code
25
code confidence
worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Southwest Airlines published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
40%
OFF

Up to 40% Savings at Southwest

Get up to 40% savings on your Southwest purchase when you use this code.

  • community
How We Verify This Code
3
code confidence
still worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
40%
OFF

Up to 40% Off Eligible Orders

Score up to 40% off your eligible Southwest order when you use this promo code during checkout.

  • store issued
How We Verify This Code
2
code confidence
still worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Southwest Airlines published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
30%
OFF

Up to 30% Off Base Fares

Use this promo code to save up to 30% on base fares at Southwest.

  • store issued
How We Verify This Code
1
code confidence
still worth a try

Code confidence is our agents' read on how likely this code is to work. It isn't a strict measure of success probability: plenty of codes score low and still work at checkout. It was last recalculated .

Southwest Airlines published this code itself, on its own pages, its newsletter or a feed we take from it.

use code
20%
OFF

Take 20% Off Your Order at Southwest

Enjoy 20% off your Southwest order when you use this code. This offer is for members only.

  • community
Offer Details

Shoppers here submitted this code or reported back on how it went. It gets the same checks as every other code on this page.

use code
DEAL

Ongoing One-Way Fares From $59

Find current Southwest sale fares starting at $59 one way on select U.S. routes on the Flight Deals and Low Fare Calendar pages. These fares are limited-time, may require advance purchase, and are subject to route and date availability, blackout dates, limited seats, and applicable taxes and fees.

Get Deal
DEAL

Two Checked Bags Fly Free on Southwest Flights

On Southwest-operated flights, each Customer may check their first and second checked bags free, subject to standard weight and size limits. Oversized and overweight items and certain specialty items may incur additional charges, and baggage policies and exceptions apply.

Get Deal
DEAL

Promotional Companion Pass Earn Offer

Register for the targeted Rapid Rewards promotion, then book and fly the required qualifying Southwest flights during the promotion period to earn a limited-time promotional Companion Pass. Once earned, you can designate a companion to fly with you for only taxes and fees on qualifying purchased or points bookings within the valid travel window, subject to route, date, and registration restrictions.

Get Deal
DEAL

Book Now, Pay Later With Monthly Payments

After selecting eligible Southwest flights, choose the available Book Now, Pay Later financing option at checkout to spread your purchase over fixed monthly payments through a third-party lender. Approval, interest, and terms are determined by the lender, not all customers or itineraries qualify, and no promo code is required.

Get Deal
10%
OFF

Payless Car Rentals: 10% Off Base Rates, Plus Up to 1,800 Points

Rapid Rewards members can save 10% on base rates for qualifying Payless rentals in the U.S. and Canada. Eligible rentals can also earn up to 1,800 Rapid Rewards points, with the bonus determined by rental length.

Get Deal
35%
OFF

Avis Car Rentals: Up to 35% Off Base Rates, Plus Up to 3,000 Points

Rapid Rewards members can save up to 35% on base rates for qualifying Avis rentals at participating airport locations. Eligible rentals can also earn up to 3,000 Rapid Rewards points, with higher point earnings for longer rentals.

Get Deal

Southwest Airlines Shopping Info

Discounts

✕
Popup/Newsletter
✓
Loyalty
Rapid Rewards

Travel & Refunds

✕
Money-Back Guarantee
✓
Refund Policy
Basic fares are non-refundable but generate transferable flight credits if canceled prior to departure.
✓
Refund Window
Up to departure time

Payments

Cards
Visa, Mastercard, American Express, Discover, Diners Club, JCB, China UnionPay
Wallets
Apple Pay, PayPal
BNPL
Flex Pay
✓
Gift Cards

Southwest Airlines Code Checks, Day by Day

Every Southwest Airlines code check from the last 14 days, plotted by the day it ran. Green is how many came back working. Red is how many southwest.com would not accept. That is the checkout testing you did not have to sit through yourself.

agents@dealhack: ~/signals --store southwest.com --days 14
421
code checks run
116
checks where the code worked
27.6%
success rate
20
different codes tried
14 days · 421 code checks · 116 worked
workedpeak 14
would not applypeak 41
Daily coupon check results
DayCodes that workedCodes that would not applySuccess rate
31517%
73118%
94118%
52417%
91636%
81338%
41127%
121643%
53014%
91833%
123227%
72224%
121840%
141844%
where this data came from:
327 shoppers reporting back80 automated cart runs12 published by the store

327 of these results came from shoppers telling us whether a code worked; the rest come from automated checks and the other sources above. Last confirmed working on . Codes that stop clearing get pulled off this page automatically.

What These Numbers Mean

A code check is one result for one code. Most are our agents applying it to a real cart and reading the order total before and after; the rest come from tracked orders and from shoppers reporting back, as broken down above. Worked means the code was accepted and the total went down. Would not apply means southwest.com refused it on that cart. That is not the same as the code being fake. The usual reasons are:

  • It expired or the store switched it off after it was published.
  • It was single-use and had already been redeemed.
  • It only covers certain categories, brands or individual products.
  • The cart did not reach a minimum spend.
  • It is limited to new customers, a first order, or an email sign-up.
  • It cannot be combined with an active sale or another code.
  • It is tied to a different country, currency or membership.

So a code that failed one check can still work on your cart, and the success rate (checks that worked divided by all checks) is best read as how easily Southwest Airlines discounts apply in general, not as a verdict on any single code. Hover any bar in the chart to see that day on its own.

When Southwest Airlines Runs Sales

Recurring events worth timing an order around. Windows shift year to year, so treat them as a shopping calendar rather than a fixed date.

  1. late August to mid-September
    Wanna Get Away Sale

    Offers discounted base airfares across domestic and international routes for autumn and winter travel windows.

  2. mid-October
    October Flash Sale

    Features reduced one-way promotional fares spanning select off-peak travel dates heading into the winter holidays.

  3. June
    Southwest Birthday Sale

    Commemorates the airline's initial June operational launch with discounted systemwide fares and bonus Rapid Rewards point offers.

Locate the Code Box at southwest.com

The agents tested the code. Entering it is the one part we leave to you. Here's exactly where the Southwest Airlines promo code goes at checkout.

Follow the shopper-submitted screenshots below to spot the Southwest Airlines promo box and apply your code. Miss a step and even a working code does nothing, so the agents mapped every one for you.

Southwest Airlines checkout page showing the Promo code field and Apply button

How to find

  1. 1.Go to the southwest.com homepage
  2. 2.Locate the flight booking widget on the main page
  3. 3.Find the 'Promo code' input field positioned below the 'Depart date' and 'Return date' fields
  4. 4.Enter the promo code into the field before clicking the 'Search flights' button

How to use

Type your code into the 'Promo code' input field within the flight search widget and click the 'Search flights' button to apply it to your search results.

Before You Buy at Southwest Airlines

What shoppers ask most about Southwest Airlines.

›How many payment methods can I combine on a single reservation?

You can use up to three forms of payment per Passenger per reservation, but only one credit card or PayPal account can be applied per booking.

›Can I use travel funds or gift cards on Getaways by Southwest vacation packages?

Getaways by Southwest vacation packages exclude flight credits, Southwest gift cards, LUV Vouchers, and Rapid Rewards points as valid forms of payment.

›What happens to remaining funds if I cancel a booking paid with a gift card?

If a reservation purchased with a Southwest gift card is canceled, any remaining funds are held as reusable flight credit for each individual passenger.

›Where can cash be used as a payment method for booking flights?

Cash is accepted exclusively at airport ticket counters located in international destinations and cannot be used on southwest.com or the mobile app.

How We Verify Southwest Airlines Codes

Nothing goes up here on trust. A Southwest Airlines code is collected, applied to a real southwest.com cart, dated the last time it took money off an order, scored on what came back, and pulled once it stops clearing. Promotions have no code to run through a checkout, so those are dated when they go live and dropped when they lapse. Here is how far that has got on this page, and every change the agents logged along the way.

agents@dealhack: ~/verify --store southwest.com --log
collect15 Southwest Airlines offers listed here: 9 codes you paste at checkout, 6 promotions that need none · 2 sent in by shoppers
test9 codes put through a live southwest.com cart · last run
confirm8 of 9 codes took money off an order in the last 30 days · most recently
score8 codes rated on how likely they are to work · last recalculated
pruneexpired offers and dead codes drop off this page automatically

Recent Southwest Airlines offer activity

Each entry is a change the agents logged on this page, dated to the day it happened.

  1. 6 codes rescored on fresh results

    121 signals read · odds of working recalculated

  2. 20% off code worked on a live southwest.com cart

    50/100 code confidence · 2 of 2 checks worked · 150 signals

  3. 6 codes retested at checkout

    applied to a live southwest.com cart

  4. 2 codes rescored on fresh results

    72 signals read · odds of working recalculated

  5. 40% off code worked on a live southwest.com cart

    2/100 code confidence · 38 signals

  6. 4 new codes added

    now in the retest rotation

  7. New 20% off code added

    sent in by a shopper · 50/100 code confidence · 2 of 2 checks worked

The agents keep retesting every Southwest Airlines code on this page. No one here vouches for a code they did not watch work. If one slips through expired, take the next on the list. We keep backups.

Help Other Southwest Airlines Shoppers

Not every Southwest Airlines code reaches us from the store. 2 codes on this page were first submitted by shoppers. They have also sent back 327 checkout results in the last 14 days, telling us which codes worked on a real cart and which came up empty. Wherever a code comes from, it still has to pass the same cart test before it goes up here.

11 hours
since a code sent in by a shopper last took money off a real southwest.com cart
78%
of every check on this page came from a shopper, not an agent

Have a code we missed?

Send it over and the agents will run it through a real southwest.com cart. If it works, it lands here with the test behind it.

Did a code work for you?

Open any Southwest Airlines code above and tell us whether it worked. It takes one tap, no sign-up, and a code that keeps failing gets pulled off the page.

Rate a code

Southwest Airlines Customer Support

Need help with your shopping? Here's what's available for Southwest Airlines when an order, return, or promo code needs a human.

Phone

1-800-435-9792

Live chat

Not available

Help center

www.southwest.com/contact-us

Customer support is handled primarily through phone, social media, and contact forms rather than live web chat.

About Southwest Airlines

Who you're buying from.

Brand Profile

Websitesouthwest.com
Founded1967
HeadquartersDallas, USA
ReferenceWikipedia
Follow Southwest Airlines for sale alerts and new arrivals

Did You Know

Founding

Southwest Airlines was originally incorporated in March 1967 under the business name Air Southwest Co. before adopting its current name in 1971.

Naming

The company trades on the New York Stock Exchange under the ticker symbol LUV as a reflection of its corporate headquarters location at Love Field.

Manufacturing

Southwest operates an exclusive all-Boeing 737 aircraft family fleet to streamline maintenance operations and crew training across its network.

Stores Like Southwest Airlines: Today's Best Coupons

These 12 stores sell products similar to Southwest Airlines. Below you can see the best coupon or deal available at each one today, so you can compare prices before you buy. 7 of them have a promo code you can copy at checkout.

Airport Parking Reservations$11 off

Up to $11 Off Airport Parking Bookings

Apply this discount code to get up to $11 off airport parking bookings or $5 off hotel and parking packages at Airport Parking Reservations.

  • sitewide
  • store issued
Get Code
Alamo$15 off

Get $15 Off $175+ Alamo Rentals

Get $15 off the base rate on qualifying 1-27 day Alamo rentals of $175 or more in the U.S. and Puerto Rico when you book via eligible partner or deals pages; discount applies to time and mileage only and excludes taxes, fees, surcharges, optional extras, and cannot be combined with some other promotional rates.

Get Deal
Sixt$10 off

Best Price Guarantee With Extra $10 Off Prepaid

Book a prepaid rental on sixt.com and if you find a qualifying lower publicly available online price for the same rental details within 24 hours, Sixt will match the lower price and give an additional $10 USD off the prepaid booking, subject to full best-price terms and conditions.

Get Deal
KAYAK35% off

Save $100 on Air Tahiti Nui Flights to Tahiti

Use this KAYAK promo code to save $100 on eligible Air Tahiti Nui flights to The Islands of Tahiti when booked via participating partners; additional property-level discounts up to 35% may also apply.

Get Code
Caesars Entertainment20% off

Extra 20% Off Caesars Palace Bookings

Apply this discount code to get an extra 20% off Caesars Palace bookings.

  • sitewide
  • store issued
Get Code
LEGOLANDBOGO

Buy One Get One Free LEGOLAND Ticket

Use this coupon code to get one free LEGOLAND theme park ticket when you purchase an eligible ticket as part of the promotional BOGO offer.

  • community
Get Code
Excellence Resorts50% off

Up to 50% Off Caribbean Stays at Excellence Punta Cana

Enjoy up to 50% off suite-only reservations at Excellence Punta Cana. Receive direct-booking benefits such as free transfer, free cancellation, and room selection for travel from December 1, 2026 through March 31, 2027. Subject to availability and restrictions.

Get Deal
Click&Boat20% off

Get 20% Off Your Order at Click&Boat

Apply this discount code to save 20% on your Click&Boat order.

  • saves ~6%
  • community
Get Code
Copa Airlines

Promotional Fares via Hub of the Americas

Copa Airlines and Copa Airlines Colombia offer recurring promotional round-trip economy fares on specific routes operated via the Hub of the Americas in Panama. Promotions apply to selected routes and travel dates, exclude multi-city itineraries, and are subject to limited seat availability, separate airport taxes and charges, and the general promotional fare conditions listed on Copas official terms page.

Get Deal
DiscoverCars.com

Zero Security Deposit With Locauto on Selected Rentals

Book a car with Locauto through DiscoverCars.com and you wont have to leave a security deposit on selected offers, as this benefit is shown as a special deal for eligible rentals in the search results.

Get Deal
Ubigi10% off

10% Off First Ubigi eSIM Data Plan Top-Up

Use the welcome code at checkout in the Ubigi app. Valid on most one-off and non-monthly plans for 200+ destinations.

  • community
Get Code
Cathay Pacific10% off

Take 10% Off Select Flights

Apply this discount code to save 10% on selected Cathay Pacific flights for students.

  • community
Get Code

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